US20070006694A1 - Cutting tool and cutting machine - Google Patents
Cutting tool and cutting machine Download PDFInfo
- Publication number
- US20070006694A1 US20070006694A1 US11/481,507 US48150706A US2007006694A1 US 20070006694 A1 US20070006694 A1 US 20070006694A1 US 48150706 A US48150706 A US 48150706A US 2007006694 A1 US2007006694 A1 US 2007006694A1
- Authority
- US
- United States
- Prior art keywords
- cutting
- groove shape
- cutting tool
- face
- tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/10—Cutting tools with special provision for cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
- B23B27/1603—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with specially shaped plate-like exchangeable cutting inserts, e.g. chip-breaking groove
- B23B27/1611—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with specially shaped plate-like exchangeable cutting inserts, e.g. chip-breaking groove characterised by having a special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/28—Features relating to lubricating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2250/00—Compensating adverse effects during turning, boring or drilling
- B23B2250/12—Cooling and lubrication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/072—Grooves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/14—Cutters, for shaping with means to apply fluid to cutting tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
- Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/30—Miscellaneous
Definitions
- the present invention relates to a cutting tool and a cutting machine, used in attached to a machine tool and the like, for cutting a working point on a work with cutting fluid being supplied there. More particularly, it relates to a cutting tool and a cutting machine used for fine processing on high precision mold core for optical surface.
- cutting operations by cutting tools have been carried out by supplying cutting fluid to a tip portion of the tools. This is to cool down a tool and a work and to remove chips there from. What is important for cutting operation is that cutting fluid shall constantly reach the working point. This is required especially when working on high precision mold core for optical surface and the like wherein fine structure of ⁇ m-order is to be formed by cutting. That is, if cutting fluid does not reach a working point when fine processing is done, shortage of the cutting fluid can possibly cause abrasion and breakage of the tool. If the abraded or broken tool keeps on cutting operation, machining accuracy deteriorates.
- a first method is to spray cutting fluid from a nozzle arranged near to the cutting tool.
- Another method is to provide a fluid passage inside of a cutting tool to spout cutting fluid from an opening arranged near to the working point.
- Japanese Unexamined Patent Publication No. 10-296506 discloses a cutting tool of which a nozzle is removably attached near to the cutting tool.
- Japanese Unexamined Patent Publication No. 8-25111 discloses a turning tool with a cutting fluid passage being formed inside.
- an object of the invention is to provide a cutting tool and a cutting machine capable of supplying cutting fluid to an edge or to a working point at a tip of the edge of the tool surely with simple structure.
- a cutting tool comprising: a tip composed by plural faces including a cutting face and a flank face, wherein a groove shape is formed on at least one of the plural faces.
- a cutting machine comprising: a work holder; a cutting tool for cutting a work held by the work holder, the cutting tool comprising a tip composed by plural faces including a cutting face and a flank face, wherein a groove shape is formed on at least one of the plural faces; and a nozzle for spouting cutting fluid to the cutting tool.
- the tip corresponding to a working point is composed by plural faces and edges of the plural faces. Groove shape is formed on at least one of the plural faces.
- the fluid flows along the groove shape.
- the groove shape is formed to head for the tip, cutting fluid is guided to the tip. Thereby, cutting fluid is surely supplied to an edge of the tool or to a working point at a tip of it with simple structure.
- the inventive cutting tool and cutting machine thus can supply cutting fluid to an edge of the tool or to a working point at a tip of it surely with simple structure.
- FIG. 1 shows schematic structure of a cutting tool directed to a first embodiment
- FIG. 2 shows schematic structure of a tip of the cutting tool directed to the first embodiment
- FIG. 3 shows schematic structure of a turning cutter which employs a cutting tool
- FIG. 4 shows schematic structure of a fly-cut cutter which employs a cutting tool
- FIG. 5 shows state of cutting operation by the cutting tool
- FIG. 6 shows schematic structure of a tip of a cutting tool directed to a second embodiment
- the first embodiment is an application of the present invention to a cutting tool used for lathing and for fly-cut processing.
- a cutting tool 10 of the first embodiment is constituted by mounting a cutting blade 11 on a blade holder 12 .
- an upper face and a front face of the cutting blade 11 correspond to a cutting face 11 a and a flank face 11 b , respectively. That is, a tip at left front side in FIG. 1 corresponds to a working point P when used.
- the flank face 11 b is a curved face.
- a rear face of the cutting blade 11 hidden behind the cutting face 11 a in FIG. 1 , is also a flank face, but not a curved face.
- the cutting blade 11 is a single crystal diamond blade for fine cutting of ⁇ m-order.
- crossing grid patterned grooves 13 are formed on the flank face 11 b of the cutting blade 11 , in the vicinity of the working point P. Furthermore, there are formed pool-like dent portions 14 at some intersections of the grooves 13 , which are wider than other portions of the grooves 13 in width.
- Cross sectional shape of the groove 13 may be rectangular, U-shape, V-shape, whatever, and depth of it is preferably between 0.01 ⁇ m and 0.5 mm.
- opening width of the groove 13 is preferably between 0.01 ⁇ m and 0.5 mm.
- the grooves 13 are provided so that cutting fluid can flow along the grooves 13 due to capillarity. Opening width of the groove 13 can be selected appropriately depending on viscosity and the like of cutting fluid, not restricted to width which can cause capillarity.
- ends of the grooves 13 do not reach an edge E formed with edges of the cutting face 11 a and the flank face 11 b . That is, there is a space between ends 15 of the grooves 13 and the edge E and a flat portion D is formed there. Therefore, shape of the edge E is not influenced by the grooves 13 . Accordingly, the grooves 13 never affect cutting accuracy. Width of the flat portion D shall be a little bit narrower than opening width and depth of the grooves 13 . As long as the flat portion has this extent of width, it never affects supply of cutting fluid to the edge E. Incidentally, a flat portion may also be formed at the other edge side, namely, at left bottom portion in FIG. 2 .
- the dent portions 14 are pool-like portions for pooling liquid, arranged on intersections of the grooves 13 .
- Opening diameter of the dent portion 14 is preferably between 0.01 mm and 0.5 mm. Depth of it is preferably between 0.01 mm and 0.5 mm. Opening of the dent portion 14 is illustrated as round here, however, it is not restricted to a round shape: any shapes such as ellipse, polygon, and the like may be applicable as long as required capacity is secured.
- Those grooves 13 and the dent portions 14 can be formed on a diamond cutting blade by pulsed laser ablation working with a femtosecond laser or the like.
- FIGS. 3 and 4 show schematic structure of a cutting machine which employs the cutting tool 10 of the present embodiment.
- FIG. 3 shows a lathe machine consisting of a surface table 21 , a driving table 22 , a work rotator 23 , a cutting fluid nozzle 24 , and a tool holder 25 .
- the cutting tool 10 is fixed and held by the tool holder 25 .
- Location of a work W is adjusted by the driving table 22 .
- the work W is held by the work rotator 23 and rotated as indicated with an arrow in FIG. 3 .
- Cutting fluid is sprayed in mist state from the cutting fluid nozzle 24 arranged in the neighborhood of the cutting tool 10 to the cutting blade 11 .
- Both water-based one and oil-based one are applicable as cutting fluid.
- the cutting fluid nozzle 24 is set and arranged so that the sprayed cutting fluid hits the neighboring area of the working point P at the flank face 11 b of the cutting blade 11 .
- FIG. 4 shows a fly-cut machine constituted by a surface table 21 , a driving table 22 , a cutting fluid nozzle 24 , a work holder 26 and a rotating tool 27 .
- the cutting tool 10 is attached to the rotating tool 27 and rotated as indicated with an arrow in FIG. 4 at predetermined speed.
- Location of a work W is adjusted by the driving table 22 and the work W itself is held by the work holder 26 .
- Cutting fluid is sprayed in mist state from the cutting fluid nozzle 24 arranged in the neighborhood of the cutting tool 10 to the cutting blade 11 .
- the cutting fluid nozzle 24 is set and arranged so that the sprayed cutting fluid hits the neighboring area of the working point P at the flank face 11 b of the cutting blade 11 .
- the cutting blade 11 gets in contact with the work W, as shown in FIG. 5 .
- Cutting is carried out by making the work W and the cutting blade 11 move relatively.
- cutting fluid is spouted in mist state from the cutting fluid nozzle 24 and supplied to the concave flank face 11 b .
- the flank face 11 b is a concave face, cutting fluid is held on this face. That is, cutting fluid is prevented from running out to other faces of the cutting blade 11 at once. So, cutting fluid is collected in the grooves 13 and the dent portions 14 enough.
- the grooves 13 form crossing grid pattern, cutting fluid can spread along the grid pattern even in the case the fluid hit only a part of the area where the grooves 13 are formed. Accordingly, cutting fluid spreads out the flank face 11 b entirely and reaches the edge E and the working point P.
- Cutting fluid collected in the dent portions 14 flows along the grooves 13 , whereby the fluid is supplied to the edge E constituted by the cutting face 11 a and the flank face 11 b and to the working point P.
- Cutting fluid is supplied to the grooves 13 from dent portions 14 , whereby shortage of cutting fluid in the grooves 13 is avoided. That is, after cutting fluid in the grooves 13 is used, cutting fluid collected in the dent portions 14 is supplied to the grooves 13 . Therefore, it is not necessary to arrange the cutting fluid nozzle 24 close to the cutting tool 10 excessively.
- the cutting fluid nozzle 24 thus can be arranged at location not intervening with the cutting tool 10 and the work W.
- the cutting tool 10 directed the first embodiment has the cutting blade 11 of which flank face 11 b has grooves 13 and the dent portions 14 thereon. Therefore, cutting fluid is collected in the grooves 13 and dent portions 14 and delivered to the edge E and to the working point P.
- the cutting fluid nozzle 24 is arranged apart a little from the working point P, cutting fluid is surely supplied there. That is, it is not required to form a fluid passage inside the tool and a supply route thereto. Therefore, it can be applied to the conventional machine composition where cutting fluid is sprayed in mist state externally. Thereby, cutting fluid can be supplied to an edge of a tool and to the working point at the tool's edge portion for sure with simple structure.
- the second embodiment is an application of the present invention to a cutting tool used for lathing and for fly-cut processing.
- An external form of a cutting blade 31 of this embodiment is similar to that of the cutting blade 11 directed the first embodiment. Similar to the cutting blade 11 , the cutting blade 31 has a working point P at the tip constituted by a cutting surface 31 a and a flank face 31 b . As shown in FIG. 6 , there are formed a dent portion 32 and plural grooves 33 reaching the working point P from the concave portion 32 , on the flank face 31 b .
- the second embodiment intends to supply cutting fluid to the working point P intensively.
- cross sectional shape of the grooves 33 and opening shape of the dent portion 32 may be any shapes.
- opening diameter of the dent portion 32 should be larger than that of the dent portion 14 directed to the first embodiment, preferably between 0.1 mm and 1.5 mm.
- the grooves 33 are designed to connect the dent portion 32 and the tip portion of the cutting blade 31 , and become gradually narrower as heading for the tip portion. A slight space may be arranged between the tip and ends of the grooves 33 and a flat portion may be provided there.
- the cutting blade 11 When cutting operation is carried out by attaching the cutting tool of the present embodiment to a lathe machine or a fly-cut machine, the cutting blade 11 is made contact with a work W, as shown in FIG. 5 . Cutting fluid is collected in the dent portion 32 and supplied to the working point P along the grooves 33 since the grooves 33 is connecting the dent portion 32 and the working point P. Similar to the first embodiment, the second embodiment can apply the structure to spray cutting fluid in mist state externally, and cutting fluid is supplied to the working point P for sure.
- the second embodiment makes it possible to supply cutting fluid to a working point at the tool's edge portion for sure with simple structure, similar to the first embodiment.
- grooves are formed on a flank face of cutting blade in both of the embodiments; however, they may be formed on a cutting face.
- the groove shapes both of the first and second embodiments may be applied to two or more faces of a cutting blade purposely, e.g., grid-patterned grooves of the first embodiment for a flank face and intensive type grooves for cutting face.
- drawings directed to the first embodiment show as if intervals between adjoining grooves 13 are constant, however, the grid pattern may be made finer as closer to the tip portion.
- the number of grooves and angles between adjoining grooves shown in the drawings are merely as illustrative examples, but it is nothing to limit the invention in any way.
Abstract
A cutting tool is constituted by plural faces and a tip portion structured with edges of the plural faces, wherein groove is formed on at least one of the plural faces. The groove is grid pattern and a dent portion is formed at some intersections of the grid pattern. Furthermore, a space is secured between one of ends of the groove and an edge constituted by a cutting face and a flank face. There is thus provided a cutting tool and a cutting machine capable of supplying cutting fluid to a tip of the tool or to a working point at the tip of it surely with simple structure.
Description
- This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2005-201624 filed on Jul. 11, 2005, the entire contents of which are incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to a cutting tool and a cutting machine, used in attached to a machine tool and the like, for cutting a working point on a work with cutting fluid being supplied there. More particularly, it relates to a cutting tool and a cutting machine used for fine processing on high precision mold core for optical surface.
- 2. Description of the Related Art
- Since past, cutting operations by cutting tools have been carried out by supplying cutting fluid to a tip portion of the tools. This is to cool down a tool and a work and to remove chips there from. What is important for cutting operation is that cutting fluid shall constantly reach the working point. This is required especially when working on high precision mold core for optical surface and the like wherein fine structure of μm-order is to be formed by cutting. That is, if cutting fluid does not reach a working point when fine processing is done, shortage of the cutting fluid can possibly cause abrasion and breakage of the tool. If the abraded or broken tool keeps on cutting operation, machining accuracy deteriorates.
- There have conventionally been devised the following methods for supplying cutting fluid to a tip portion of a tool. A first method is to spray cutting fluid from a nozzle arranged near to the cutting tool. Another method is to provide a fluid passage inside of a cutting tool to spout cutting fluid from an opening arranged near to the working point. For example, Japanese Unexamined Patent Publication No. 10-296506 discloses a cutting tool of which a nozzle is removably attached near to the cutting tool. Japanese Unexamined Patent Publication No. 8-25111 discloses a turning tool with a cutting fluid passage being formed inside.
- However, the above-mentioned conventional tools have had the following problems. Relating to the conventional method to arrange a cutting fluid nozzle near to a tool, as disclosed in the Publication No. 10-296506, degree of closeness of the nozzle to the tool is limited. Furthermore, the tool and a working object meet each other very closely at a working point. Therefore, cutting fluid is hard to go into a narrow space between the tool and the working object. Consequently, there arises a problematic case that cutting fluid is not constantly supplied to the working point appropriately. Especially for the case of cutting operation of micro-level structure, a cutting tool itself is small. On that account, shortage of cutting fluid even for an instant can possibly cause damage to the tool. So, more reliable fluid supplying method has been demanded.
- Furthermore, relating to another conventional method to provide a cutting fluid passage inside of the tool, as disclosed in the Publication No. 8-25111, it is difficult to design and form the passage and a supply route of cutting fluid. Especially for the case of fly-cut method and the like wherein a cutting tool is moved, special structure for cutting fluid supply is required, which is problematic.
- The present invention has been attempted to solve the above-noted problems involved in the conventional cutting tools. Thus, an object of the invention is to provide a cutting tool and a cutting machine capable of supplying cutting fluid to an edge or to a working point at a tip of the edge of the tool surely with simple structure.
- To achieve the above object of the present invention, there is provided a cutting tool comprising: a tip composed by plural faces including a cutting face and a flank face, wherein a groove shape is formed on at least one of the plural faces.
- There is also provided a cutting machine comprising: a work holder; a cutting tool for cutting a work held by the work holder, the cutting tool comprising a tip composed by plural faces including a cutting face and a flank face, wherein a groove shape is formed on at least one of the plural faces; and a nozzle for spouting cutting fluid to the cutting tool.
- According to the present invention, the tip corresponding to a working point is composed by plural faces and edges of the plural faces. Groove shape is formed on at least one of the plural faces. When cutting fluid is supplied to the face with groove geometry externally thereon, the fluid flows along the groove shape. Suppose that the groove shape is formed to head for the tip, cutting fluid is guided to the tip. Thereby, cutting fluid is surely supplied to an edge of the tool or to a working point at a tip of it with simple structure.
- The inventive cutting tool and cutting machine thus can supply cutting fluid to an edge of the tool or to a working point at a tip of it surely with simple structure.
- These and other objects and advantages of this invention will become more fully apparent from the following detailed description taken with the accompanying drawings in which:
-
FIG. 1 shows schematic structure of a cutting tool directed to a first embodiment; -
FIG. 2 shows schematic structure of a tip of the cutting tool directed to the first embodiment; -
FIG. 3 shows schematic structure of a turning cutter which employs a cutting tool; -
FIG. 4 shows schematic structure of a fly-cut cutter which employs a cutting tool; -
FIG. 5 shows state of cutting operation by the cutting tool; and -
FIG. 6 shows schematic structure of a tip of a cutting tool directed to a second embodiment; - A first embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The first embodiment is an application of the present invention to a cutting tool used for lathing and for fly-cut processing.
- As shown in
FIG. 1 , acutting tool 10 of the first embodiment is constituted by mounting acutting blade 11 on ablade holder 12. InFIG. 1 , an upper face and a front face of thecutting blade 11 correspond to acutting face 11 a and aflank face 11 b, respectively. That is, a tip at left front side inFIG. 1 corresponds to a working point P when used. Theflank face 11 b is a curved face. A rear face of thecutting blade 11, hidden behind thecutting face 11 a inFIG. 1 , is also a flank face, but not a curved face. Thecutting blade 11 is a single crystal diamond blade for fine cutting of μm-order. - As shown in
FIGS. 1 and 2 , crossing grid patternedgrooves 13 are formed on theflank face 11 b of thecutting blade 11, in the vicinity of the working point P. Furthermore, there are formed pool-like dent portions 14 at some intersections of thegrooves 13, which are wider than other portions of thegrooves 13 in width. Cross sectional shape of thegroove 13 may be rectangular, U-shape, V-shape, whatever, and depth of it is preferably between 0.01 μm and 0.5 mm. Furthermore, opening width of thegroove 13 is preferably between 0.01 μm and 0.5 mm. Thegrooves 13 are provided so that cutting fluid can flow along thegrooves 13 due to capillarity. Opening width of thegroove 13 can be selected appropriately depending on viscosity and the like of cutting fluid, not restricted to width which can cause capillarity. - As shown in
FIG. 2 , ends of thegrooves 13 do not reach an edge E formed with edges of thecutting face 11 a and theflank face 11 b. That is, there is a space betweenends 15 of thegrooves 13 and the edge E and a flat portion D is formed there. Therefore, shape of the edge E is not influenced by thegrooves 13. Accordingly, thegrooves 13 never affect cutting accuracy. Width of the flat portion D shall be a little bit narrower than opening width and depth of thegrooves 13. As long as the flat portion has this extent of width, it never affects supply of cutting fluid to the edge E. Incidentally, a flat portion may also be formed at the other edge side, namely, at left bottom portion inFIG. 2 . - Furthermore, the
dent portions 14 are pool-like portions for pooling liquid, arranged on intersections of thegrooves 13. Opening diameter of thedent portion 14 is preferably between 0.01 mm and 0.5 mm. Depth of it is preferably between 0.01 mm and 0.5 mm. Opening of thedent portion 14 is illustrated as round here, however, it is not restricted to a round shape: any shapes such as ellipse, polygon, and the like may be applicable as long as required capacity is secured. Thosegrooves 13 and thedent portions 14 can be formed on a diamond cutting blade by pulsed laser ablation working with a femtosecond laser or the like. -
FIGS. 3 and 4 show schematic structure of a cutting machine which employs thecutting tool 10 of the present embodiment.FIG. 3 shows a lathe machine consisting of a surface table 21, a driving table 22, awork rotator 23, a cuttingfluid nozzle 24, and atool holder 25. The cuttingtool 10 is fixed and held by thetool holder 25. Location of a work W is adjusted by the driving table 22. The work W is held by thework rotator 23 and rotated as indicated with an arrow inFIG. 3 . - Cutting fluid is sprayed in mist state from the cutting
fluid nozzle 24 arranged in the neighborhood of thecutting tool 10 to thecutting blade 11. Both water-based one and oil-based one are applicable as cutting fluid. The cuttingfluid nozzle 24 is set and arranged so that the sprayed cutting fluid hits the neighboring area of the working point P at theflank face 11 b of thecutting blade 11. -
FIG. 4 shows a fly-cut machine constituted by a surface table 21, a driving table 22, a cuttingfluid nozzle 24, awork holder 26 and arotating tool 27. The cuttingtool 10 is attached to therotating tool 27 and rotated as indicated with an arrow inFIG. 4 at predetermined speed. Location of a work W is adjusted by the driving table 22 and the work W itself is held by thework holder 26. Cutting fluid is sprayed in mist state from the cuttingfluid nozzle 24 arranged in the neighborhood of thecutting tool 10 to thecutting blade 11. The cuttingfluid nozzle 24 is set and arranged so that the sprayed cutting fluid hits the neighboring area of the working point P at theflank face 11 b of thecutting blade 11. - At cutting operation with the above such cutting machine, the
cutting blade 11 gets in contact with the work W, as shown inFIG. 5 . Cutting is carried out by making the work W and thecutting blade 11 move relatively. While cutting operation, cutting fluid is spouted in mist state from the cuttingfluid nozzle 24 and supplied to theconcave flank face 11 b. Since theflank face 11 b is a concave face, cutting fluid is held on this face. That is, cutting fluid is prevented from running out to other faces of thecutting blade 11 at once. So, cutting fluid is collected in thegrooves 13 and thedent portions 14 enough. Furthermore, since thegrooves 13 form crossing grid pattern, cutting fluid can spread along the grid pattern even in the case the fluid hit only a part of the area where thegrooves 13 are formed. Accordingly, cutting fluid spreads out theflank face 11 b entirely and reaches the edge E and the working point P. - Since the
grooves 13 and thedent portions 14 are formed on theflank face 11 b, some extent of cutting fluid is collected. Cutting fluid collected in thedent portions 14 flows along thegrooves 13, whereby the fluid is supplied to the edge E constituted by the cuttingface 11 a and theflank face 11 b and to the working point P. Cutting fluid is supplied to thegrooves 13 fromdent portions 14, whereby shortage of cutting fluid in thegrooves 13 is avoided. That is, after cutting fluid in thegrooves 13 is used, cutting fluid collected in thedent portions 14 is supplied to thegrooves 13. Therefore, it is not necessary to arrange the cuttingfluid nozzle 24 close to thecutting tool 10 excessively. The cuttingfluid nozzle 24 thus can be arranged at location not intervening with the cuttingtool 10 and the work W. - As described, the cutting
tool 10 directed the first embodiment has thecutting blade 11 of which flankface 11 b hasgrooves 13 and thedent portions 14 thereon. Therefore, cutting fluid is collected in thegrooves 13 anddent portions 14 and delivered to the edge E and to the working point P. On that account, even though the cuttingfluid nozzle 24 is arranged apart a little from the working point P, cutting fluid is surely supplied there. That is, it is not required to form a fluid passage inside the tool and a supply route thereto. Therefore, it can be applied to the conventional machine composition where cutting fluid is sprayed in mist state externally. Thereby, cutting fluid can be supplied to an edge of a tool and to the working point at the tool's edge portion for sure with simple structure. - A second embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The second embodiment is an application of the present invention to a cutting tool used for lathing and for fly-cut processing.
- An external form of a
cutting blade 31 of this embodiment is similar to that of thecutting blade 11 directed the first embodiment. Similar to thecutting blade 11, thecutting blade 31 has a working point P at the tip constituted by a cuttingsurface 31 a and aflank face 31 b. As shown inFIG. 6 , there are formed adent portion 32 andplural grooves 33 reaching the working point P from theconcave portion 32, on theflank face 31 b. The second embodiment intends to supply cutting fluid to the working point P intensively. - Similar to the first embodiment, cross sectional shape of the
grooves 33 and opening shape of thedent portion 32 may be any shapes. On the other hand, opening diameter of thedent portion 32 should be larger than that of thedent portion 14 directed to the first embodiment, preferably between 0.1 mm and 1.5 mm. Thegrooves 33 are designed to connect thedent portion 32 and the tip portion of thecutting blade 31, and become gradually narrower as heading for the tip portion. A slight space may be arranged between the tip and ends of thegrooves 33 and a flat portion may be provided there. - When cutting operation is carried out by attaching the cutting tool of the present embodiment to a lathe machine or a fly-cut machine, the
cutting blade 11 is made contact with a work W, as shown inFIG. 5 . Cutting fluid is collected in thedent portion 32 and supplied to the working point P along thegrooves 33 since thegrooves 33 is connecting thedent portion 32 and the working point P. Similar to the first embodiment, the second embodiment can apply the structure to spray cutting fluid in mist state externally, and cutting fluid is supplied to the working point P for sure. - As described, the second embodiment makes it possible to supply cutting fluid to a working point at the tool's edge portion for sure with simple structure, similar to the first embodiment.
- The embodiments were described above merely as illustrative examples, but it is nothing to limit the invention in any way. Therefore, the invention can obviously be improved or modified in various ways without deviating from its essentials.
- For instance, grooves are formed on a flank face of cutting blade in both of the embodiments; however, they may be formed on a cutting face. For instance, the groove shapes both of the first and second embodiments may be applied to two or more faces of a cutting blade purposely, e.g., grid-patterned grooves of the first embodiment for a flank face and intensive type grooves for cutting face. For instance, drawings directed to the first embodiment show as if intervals between adjoining
grooves 13 are constant, however, the grid pattern may be made finer as closer to the tip portion. Furthermore, it is not always required to make depth and width of grooves constant. For instance, the number of grooves and angles between adjoining grooves shown in the drawings are merely as illustrative examples, but it is nothing to limit the invention in any way.
Claims (19)
1. A cutting tool comprising a tip composed by plural faces including a cutting face and a flank face,
wherein a groove shape is formed on at least one of the plural faces.
2. A cutting tool according to claim 1 ,
wherein a part of the groove shape is formed as a dent portion wider than the other portions of the groove shape.
3. A cutting tool according to claim 2 ,
wherein a portion other than the dent portion of the groove shape is formed connecting the tip and the dent portion.
4. A cutting tool according to claim 3 ,
wherein the portion other than the dent portion of the groove shape is formed narrower gradually as heading for the tip.
5. A cutting tool according to claim 1 ,
wherein the groove shape is formed in a crossing grid pattern.
6. A cutting tool according to claim 1 ,
wherein there is a flat portion between end of the groove shape and an edge of the face on which the groove shape is formed.
7. A cutting tool according to claim 1 ,
wherein at least one of the faces on which groove shape is formed is a concave face.
8. A cutting tool according to claim 1 ,
wherein the groove shape is formed on a flank face.
9. A cutting tool according to claim 1 ,
wherein the groove shape supplies cutting fluid in a manner of capillarity.
10. A cutting tool according to claim 1 ,
wherein a portion containing the tip is made of single crystal diamond.
11. A cutting machine comprising:
a work holder;
a cutting tool for cutting a work held by the work holder, the cutting tool comprising a tip composed by plural faces including a cutting face and a flank face, wherein a groove shape is formed on at least one of the plural faces; and
a nozzle for spouting cutting fluid to the cutting tool.
12. A cutting machine according to claim 11 ,
wherein a part of the groove shape is formed as a dent portion wider than the other portions of the groove shape.
13. A cutting machine according to claim 12 ,
wherein a portion other than the dent portion of the groove shape is formed connecting the tip and the dent portion.
14. A cutting machine according to claim 13 ,
wherein the portion other than the dent portion of the groove shape is formed narrower gradually as heading for the tip.
15. A cutting machine according to claim 11 ,
wherein the groove shape is formed in a crossing grid pattern.
16. A cutting machine according to claim 11 ,
wherein there is a flat portion between end of the groove shape and an edge of the face on which the groove shape is formed.
17. A cutting machine according to claim 11 ,
wherein at least one of the faces on which groove shape is formed is a concave face.
18. A cutting machine according to claim 11 ,
wherein the groove shape is formed on a flank face.
19. A cutting machine according to claim 11 ,
wherein the nozzle sprays cutting fluid in mist state.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005201624A JP4830377B2 (en) | 2005-07-11 | 2005-07-11 | Cutting tools |
JP2005-201624 | 2005-07-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070006694A1 true US20070006694A1 (en) | 2007-01-11 |
US7396191B2 US7396191B2 (en) | 2008-07-08 |
Family
ID=37608544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/481,507 Expired - Fee Related US7396191B2 (en) | 2005-07-11 | 2006-07-06 | Cutting tool and cutting machine |
Country Status (3)
Country | Link |
---|---|
US (1) | US7396191B2 (en) |
JP (1) | JP4830377B2 (en) |
CN (1) | CN1895823A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009007097A1 (en) * | 2007-07-12 | 2009-01-15 | Felix Mittelfarwick | Method for cooling and lubricating a machine tool, device for carrying out the method and machine tool |
DE102007051145A1 (en) * | 2007-10-25 | 2009-04-30 | Carl Zeiss Smt Ag | Device for machining surface of substrate for manufacturing microstructure on surface, has carrier moving relative to substrate which is formed for arranging tool on carrier |
JP2012210673A (en) * | 2011-03-31 | 2012-11-01 | Mitsubishi Materials Corp | End mill which exhibits excellent wear resistance |
JP2012210672A (en) * | 2011-03-31 | 2012-11-01 | Mitsubishi Materials Corp | End mill exhibiting excellent wear resistance |
EP2625367A1 (en) * | 2010-10-04 | 2013-08-14 | Michigan Technological University | Micro-jet cooling of cutting tools |
US20150298221A1 (en) * | 2014-04-17 | 2015-10-22 | Kennametal Inc. | Machining tool and method for manufacturing a machining tool |
US20160067785A1 (en) * | 2014-09-09 | 2016-03-10 | Andrew T. Wang | Cutting inserts with honeycomb sandwich structure for cooling |
US10105769B2 (en) | 2014-04-17 | 2018-10-23 | Kennametal Inc. | Machining tool and method for manufacturing a machining tool |
US20190232390A1 (en) * | 2013-04-11 | 2019-08-01 | Sandvik Intellectual Property Ab | Bore Cutting Tool and Method of Making the Same |
US20200376565A1 (en) * | 2019-05-31 | 2020-12-03 | Qingdao university of technology | Electrocaloric assisted internal cooling texture turning tool and nanofluid minimal quantity lubrication intelligent working system |
EP3656493A4 (en) * | 2017-07-19 | 2021-04-28 | Sumitomo Electric Hardmetal Corp. | Cutting insert and method for manufacturing cutting insert |
EP3851231A1 (en) * | 2020-01-17 | 2021-07-21 | Seco Tools Ab | A cutting insert |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7963729B2 (en) | 2007-01-18 | 2011-06-21 | Kennametal Inc. | Milling cutter and milling insert with coolant delivery |
US7883299B2 (en) * | 2007-01-18 | 2011-02-08 | Kennametal Inc. | Metal cutting system for effective coolant delivery |
US8439608B2 (en) * | 2007-01-18 | 2013-05-14 | Kennametal Inc. | Shim for a cutting insert and cutting insert-shim assembly with internal coolant delivery |
US9101985B2 (en) | 2007-01-18 | 2015-08-11 | Kennametal Inc. | Cutting insert assembly and components thereof |
US8727673B2 (en) | 2007-01-18 | 2014-05-20 | Kennametal Inc. | Cutting insert with internal coolant delivery and surface feature for enhanced coolant flow |
US8454274B2 (en) | 2007-01-18 | 2013-06-04 | Kennametal Inc. | Cutting inserts |
US8328471B2 (en) | 2007-01-18 | 2012-12-11 | Kennametal Inc. | Cutting insert with internal coolant delivery and cutting assembly using the same |
JP5279561B2 (en) * | 2009-03-12 | 2013-09-04 | オーエスジー株式会社 | Single crystal diamond tool |
JP5464493B2 (en) * | 2010-06-29 | 2014-04-09 | 三菱マテリアル株式会社 | Cutting insert |
US8734062B2 (en) | 2010-09-02 | 2014-05-27 | Kennametal Inc. | Cutting insert assembly and components thereof |
US8827599B2 (en) | 2010-09-02 | 2014-09-09 | Kennametal Inc. | Cutting insert assembly and components thereof |
JP5843102B2 (en) * | 2012-01-19 | 2016-01-13 | 株式会社デンソー | Cutting tools |
JP5905320B2 (en) * | 2012-04-16 | 2016-04-20 | 東芝機械株式会社 | Grooving method and mirror surface processing method for film workpiece by fly cut |
JP5983364B2 (en) * | 2012-12-04 | 2016-08-31 | 三菱マテリアル株式会社 | End mill |
CN103084594B (en) * | 2013-01-15 | 2015-10-14 | 上海交通大学 | A kind of cutting tool structure based on rolling anti-attrition principle |
CN103587224B (en) * | 2013-11-15 | 2015-09-30 | 京东方科技集团股份有限公司 | A kind of polaroid hoe scaler |
JP7374726B2 (en) | 2019-11-14 | 2023-11-07 | 株式会社アイシン福井 | Cutting tools |
JP7372116B2 (en) | 2019-11-14 | 2023-10-31 | 株式会社アイシン福井 | Cutting tools |
WO2022180697A1 (en) * | 2021-02-24 | 2022-09-01 | アイシン・エイ・ダブリュ工業株式会社 | Cutting tool |
CN117120190A (en) * | 2021-02-24 | 2023-11-24 | 株式会社爱信福井 | Cutting tool |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6957933B2 (en) * | 2003-05-30 | 2005-10-25 | Siderca S.A.I.C. | Threading insert with cooling channels |
US7063487B2 (en) * | 2003-03-14 | 2006-06-20 | Sandvik Intellectual Property Ab | Tool and cutting insert for the fine turning of grooves in workpieces |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933522Y2 (en) * | 1979-05-18 | 1984-09-19 | 東芝タンガロイ株式会社 | clamp bite |
EP0719193B1 (en) * | 1993-09-13 | 1998-10-28 | Widia GmbH | Cutting insert |
JP3317783B2 (en) | 1994-07-08 | 2002-08-26 | 東芝タンガロイ株式会社 | Turning tools |
JP3489412B2 (en) | 1997-02-25 | 2004-01-19 | 三菱マテリアル株式会社 | Tool with oil hole |
JPH11267902A (en) * | 1998-03-23 | 1999-10-05 | Hiroshi Hashimoto | Tool having ultra-fine cutting blade and processing tool having ultra-fine cutting blade |
-
2005
- 2005-07-11 JP JP2005201624A patent/JP4830377B2/en not_active Expired - Fee Related
-
2006
- 2006-07-04 CN CNA200610103018XA patent/CN1895823A/en active Pending
- 2006-07-06 US US11/481,507 patent/US7396191B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7063487B2 (en) * | 2003-03-14 | 2006-06-20 | Sandvik Intellectual Property Ab | Tool and cutting insert for the fine turning of grooves in workpieces |
US6957933B2 (en) * | 2003-05-30 | 2005-10-25 | Siderca S.A.I.C. | Threading insert with cooling channels |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009007097A1 (en) * | 2007-07-12 | 2009-01-15 | Felix Mittelfarwick | Method for cooling and lubricating a machine tool, device for carrying out the method and machine tool |
DE102007051145A1 (en) * | 2007-10-25 | 2009-04-30 | Carl Zeiss Smt Ag | Device for machining surface of substrate for manufacturing microstructure on surface, has carrier moving relative to substrate which is formed for arranging tool on carrier |
EP2625367A1 (en) * | 2010-10-04 | 2013-08-14 | Michigan Technological University | Micro-jet cooling of cutting tools |
EP2625367A4 (en) * | 2010-10-04 | 2014-04-30 | Univ Michigan Tech | Micro-jet cooling of cutting tools |
JP2012210673A (en) * | 2011-03-31 | 2012-11-01 | Mitsubishi Materials Corp | End mill which exhibits excellent wear resistance |
JP2012210672A (en) * | 2011-03-31 | 2012-11-01 | Mitsubishi Materials Corp | End mill exhibiting excellent wear resistance |
US11524345B2 (en) * | 2013-04-11 | 2022-12-13 | Sandvik Intellectual Property Ab | Bore cutting tool and method of making the same |
US20190232390A1 (en) * | 2013-04-11 | 2019-08-01 | Sandvik Intellectual Property Ab | Bore Cutting Tool and Method of Making the Same |
US10105769B2 (en) | 2014-04-17 | 2018-10-23 | Kennametal Inc. | Machining tool and method for manufacturing a machining tool |
US10369636B2 (en) * | 2014-04-17 | 2019-08-06 | Kennametal Inc. | Machining tool and method for manufacturing a machining tool |
US20150298221A1 (en) * | 2014-04-17 | 2015-10-22 | Kennametal Inc. | Machining tool and method for manufacturing a machining tool |
US20160067785A1 (en) * | 2014-09-09 | 2016-03-10 | Andrew T. Wang | Cutting inserts with honeycomb sandwich structure for cooling |
EP3656493A4 (en) * | 2017-07-19 | 2021-04-28 | Sumitomo Electric Hardmetal Corp. | Cutting insert and method for manufacturing cutting insert |
US11554427B2 (en) | 2017-07-19 | 2023-01-17 | Sumitomo Electric Hardmetal Corp. | Cutting insert and method for manufacturing cutting insert |
US20200376565A1 (en) * | 2019-05-31 | 2020-12-03 | Qingdao university of technology | Electrocaloric assisted internal cooling texture turning tool and nanofluid minimal quantity lubrication intelligent working system |
EP3851231A1 (en) * | 2020-01-17 | 2021-07-21 | Seco Tools Ab | A cutting insert |
WO2021144199A1 (en) * | 2020-01-17 | 2021-07-22 | Seco Tools Ab | A cutting insert |
Also Published As
Publication number | Publication date |
---|---|
JP4830377B2 (en) | 2011-12-07 |
CN1895823A (en) | 2007-01-17 |
JP2007015085A (en) | 2007-01-25 |
US7396191B2 (en) | 2008-07-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7396191B2 (en) | Cutting tool and cutting machine | |
US10654116B2 (en) | Cutting insert, metal spacer and holder | |
EP3059034B1 (en) | Tool holder and cutting tool | |
CN110899740B (en) | Inner-cooling type inner hole turning tool | |
EP1722973B1 (en) | Cutting tool and associated tool head | |
JP2007075933A (en) | Boring cutting tool with coolant hole | |
WO2011132686A1 (en) | Gun drill | |
JP5781163B2 (en) | Holder and cutting tool | |
JP2008238342A (en) | Throw-away insert, rotating tool equipped with the same and cutting method | |
JPH11309616A (en) | Oil mist machining drill | |
JP6389205B2 (en) | Machining method using drill and drill with coolant injection hole | |
JP2008221400A (en) | Cutting device | |
JP2006136953A (en) | Minimum quantity lubrication cutting tool, device and method | |
KR20230159358A (en) | turning tools | |
JP2014039963A (en) | Drill with coolant jet hole | |
JP5952126B2 (en) | Inserts and cutting tools | |
CN112351852B (en) | Deep hole drill and method for producing a deep hole drill | |
JP4120319B2 (en) | Twist drill | |
JP7406860B1 (en) | tool holder | |
EP1106287A1 (en) | Cutting device and cutting work method | |
JPH06134647A (en) | Method and device for supplying coolant | |
JP2000052119A (en) | Machining drill for deep hole | |
JP6555605B1 (en) | Blade-replaceable rolling tool body and blade-replaceable rolling tool | |
KR100748565B1 (en) | Reamer | |
CN211992036U (en) | Cutting tool structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KONICA MINOLTA OPTO, INC., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FUJIMOTO, AKIHIRO;OYANAGI, TAISUKE;REEL/FRAME:018033/0527 Effective date: 20060614 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
CC | Certificate of correction | ||
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20160708 |